Improvement in scroll-sawing- machines



thrilled l tant' '1 me @eem o Kia.

AUGUST M. SCHILLING, OF CHICAGO, ILLINOIS.`

l Letters Patent No. 88,417, lated March 30, 1869.

IMPROVEMENT IN SVCROLL-SAWING- MACHINES.

The -Schedule referred to in these Letters Patent and making part bf thesama.

To all whom it may concern..-

Bc it known that I, AUGUST M. ScnLLrNG, of Chicago, 1n the county oi'Cook, and State of Illinois, have invented a new and useful Improvementin Scroll-Sawl ing Machines; and I do hereby declare that the followingis a full, clear, and exact description thereof, which will enable thoseskilled in the art to make and-use the same, reference being had to the.accompanying' drawings, forming part of this specification, in which-Figure l is a front View of my machine, partly in section, through thelin'e a: x, fig. l.

Figure 2 is a detail top View of the central part oi' the table, showingthe adjustable slides.

Similar, letters of reference indicate corresponding parts.

My invention has for its object to furnish an Viinproved scroll-sawingmachine, which shall be so constructed and arranged that holes may besawu with faciiity and accuracy, without its being necessary to stopthe. saw to introduce the material to be sawn; and

It. consists iu the construction and combination of various parts ofthemachine` as hereinafter more fully described.

A represents theframe of the machine;

B, the table; and A A C, a joist, or beam ofthe building in which themachine is used.

D is the (hiring-shaft, which revolves in bearings in the frame A, andwhich is provided with a fast pulley, dl, aud a loose pulley, cl2.

To the end of the shaft D is attached a crank, or crank-wheel E, towhich the lowerend of the pitman F is pivoted, the upper end of which is-pivoted to the sliding block G, to which the lower end of the saw H isattached.

The sliding block G slides up and down in adjustable ways bI, attached,by set-screws passing lthrough slots in said ways, to the support. J,attached to the frame A, so that the said ways may be convenientlyVadjusted to compensate for the wear.

Upon -the upper part of the ysliding block G are 1 formed shoulders y',against which thepin, or shoulder of thesaw H rests, audbetweeu whichthe saw H passes.

" The saw-plate is extended below the said pin, or

shoulders, and rests against the side ofthe block K, formed solidlyupon, or securely attached to the sliding block G.

The lower end of the saw-plate H is clamped against the block, or flangeK, by the sliding block L, which is moved forward, to secure, and back,to release the saw H, by the set-screw M, .as shown in iig. l.

This construction holds the saw H securely, aud enables it to be usedwith its upper end free.

N is a'support, attached to a joist, or beam of the building, or to someother suitable support.

The support N is jointed, so that its lower part may be convenientlyturned away from the upper part of the saw H, for convenience in passingthe material through which the hole is to be sawn over the upper end ofthe said saw.

When the jointed part of the support N is turned down into a verticalposition, to receive the upper part of the saw H, it is secured in placeby the lever O, which is pivoted to the movable part of said support, insuch a position that its forward endmay be turned upover the stationarypart ofl said support, as shown in g. 1, where it is held securely inposition by the spring P, one end of which is attached to the movablepart ofthe support N, and the free end of which presses against theforward part of the lever O, as shown in fig. 1.

Q is a plate, or block sliding up and down upon the lower, or movablepart of the support N, to which it is secured by a set-screw, passingthrough a slot iu said block, or plate Q, so that the length of thesupport N may be adjusted according to the thickness of the material tobe sawn.

The groove in which the saw H works is formed by -the blocks R, adjustably secured to the block, or plate Q by set-screws, passing throughslots in the blocks R, so that the said blocks may be moved to adjustthem to the thickness of the saw.

S are plates let into and secured to the table B.

T is a slide placed in a groove, or slot in the plate S, directly in therear of the sawH, and which is secured in place when adjusted, accordingto the size of the saw, by aset-screw, as shown in iig. 2.

U are narrow slides, placed between the plates S, at the sides of thesaw H, so that they may be adjusted according to the thickness andbreadth of the saw, to support and hold the said saw in proper position,enabling thin stuff to be sawn without using'the support N.

Uz are wider slides, placed upon both sides of the slot; through whichthe 'saw H works, and which may be adjusted to support the stuff, andprevent it from being torn by said saw.

The slides Ul U2 are secured in place, when adj usted,

by set-screws, passing horizontally through the forward plate S, and theheads of which may be covered and protected by a cap, V, as shown in 1.l

I claim as new, and desire to secure by Letters Patentl. The plates S S,recessed as described', to receive the adjustable plate T and the platesUl U2, ctamped by the front set-screws, as herein described, for thepurpose specified.

2.' The support N, carrying the extension-plate Q and adjustableguide-blocks R, when jointed as described, for the purpose specified.

Y AUGUST M. SGHILLING. Witnesses: v

LoUIs WAGNnn,

ALBERT H. LABNED.

